Moisture Output and Temperature@ 2hrs, 15 breaths/minute (ISO 9360-1) 
     Vt 250ml 20.5mg H2O/l @ 30.0oC
    Vt 500ml 31mg H2O/l @ 30.0oC
     Vt 750ml 29.7mg H2O/l @ 30.0oC
     Vt 1000ml 29.6mg H2O/l @ 30.0oC
Resistance to flow (ISO 9360)  
     30 l/min 0.5cm H2O
     60 l/min 1.1cm H2O
     90 l/min 2.0cm H2O
Dead space
(connectors included - ISO 9360)
60ml (compressed)
75ml (extended)
Weight 12g